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Re: Replacement rules with I (sqrt(-1)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg45236] Re: Replacement rules with I (sqrt(-1)
  • From: "John Doty" <jpd at w-d.org>
  • Date: Tue, 23 Dec 2003 05:13:29 -0500 (EST)
  • References: <brhi2e$jha$1@smc.vnet.net> <brk4oe$sq7$1@smc.vnet.net> <brpkil$7m4$1@smc.vnet.net> <brs4nf$ihe$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <brs4nf$ihe$1 at smc.vnet.net>, "Jean.Pellegri"
<Jean.Pellegri at wanadoo.fr> wrote:

> Is \[ImaginaryI] an "atom" (or "symbol") (like 3 or like a) ??

\[ImaginaryI] is a letter. It may be part of a symbol. There is a
built-in symbol whose name is just \[ImaginaryI]. This particular symbol
evaluates to Complex[0,1].

> 
> Is not Complex[3,1] an "atom" ??

It is an atom, but it is not a symbol.

-- 
| John Doty		"You can't confuse me, that's my job."
| Home: jpd at w-d.org
| Work: jpd at space.mit.edu


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